.wrap{
    widows: 100%;
    height: 100%;
    overflow: hidden;
}
.list-content{
    width:100%;
    height: 100%;
    overflow: auto;
}

.nav{
    width:20px;
    position: absolute;
    top:50%;
    transform: translateY(-50%);
    right:0px;
}

.item{
    h4{
        width:100%;
        height: 20px;
        background: #eee;
        line-height: 20px;
    }
    dl{
        display: flex;
        border-bottom:1px solid gray;
        padding:10px;
        align-items: center;
        dt{
            width:40px;
            height: 40px;
            margin-right:10px;
            img{
                width:100%;
            }
        }
    }
}